Study on the Vibration Effect of Short Footage Blasting Load on Surrounding Rock-Support Structure of Tunnel

Table 8

Relevant parameters of initial support structure.

Material name	Modulus of elasticity E (KN/m^2)	Poisson’s ratio	Test weight ρ (KN/m^2)	Model unit	Constitutive model
Anchor	2.3 × 10^8	0.3	80	Implantable truss	Elasticity
Shotcrete	3 × 10^7	0.26	28	Board unit	Elasticity